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Asmall ball with mass 1.50 kg is mounted on one end of a rod 0.600 m long and of negligible mass. the system rotates in a horizontal circle about the other end of the rod at 4900 rev/min.
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If the force applied to an object remains constant, is more power needed for the object to move faster ? explain
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Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
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Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?
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Asmall ball with mass 1.50 kg is mounted on one end of a rod 0.600 m long and of negligible mass. th...
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